A Stunning Upset, But What Was That Dance? Meet the Nae Nae.

On Friday afternoon, Mercer pulled off the biggest upset of the NCAA tournament so far, beating Duke 78-71. After the game, the Bears’ Kevin Canevari—who had already garnered one viral moment, albeit one that was slightly embarrassing—broke out into a boisterous GIF-worthy groove, repeating a series of steps over and over again to the delight of his teammates. Much of the rest of the world, however, was probably wondering what the heck he was doing.

The dance has since become a national phenomenon, particularly among athletes: You can find plenty of videos of players Nae Nae-ing in the locker room or on the court. Even Dwight Howard has proved unable to resist the joyous dance. Back in January, he appeared in a skit alongside We Are Toonz, enthusiastically joining in on the fun.